#14 作成は完了

backend/config/routes.rb

@@ -52,6 +52,8 @@ Rails.application.routes.draw do
   get "ip_addresses/create"
   get "ip_addresses/update"
   get "ip_addresses/destroy"
+  get 'preview/title', to: 'preview#title'
+  get 'preview/thumbnail', to: 'preview#thumbnail'
   root 'home#index'
 
   resources :posts